| 鱼腥藻在满江红-鱼腥藻共生体系去除水中铀时的作用 |
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| 引用本文： | 胡南,丁德馨,赵维超,胡劲松,谭煜健,李乐,郑济芳,王永东.鱼腥藻在满江红-鱼腥藻共生体系去除水中铀时的作用[J].环境科学学报,2017,37(1):162-168. |
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| 作者姓名： | 胡南 丁德馨 赵维超 胡劲松 谭煜健 李乐 郑济芳 王永东 |
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| 作者单位： | 南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001,南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001,南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001,南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001,南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001,南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001,南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001,南华大学铀矿冶生物技术国防重点学科实验室, 衡阳 421001 |
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| 基金项目： | 国防基础重点基金（No.B3720132001）；国家自然科学基金（No.U1401231，11305087）；湖南省自然科学基金（No.13JJ6050）；湖南省教育厅优秀青年项目（No.14B150） |
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| 摘 要： | 通过分离有藻满江红中的鱼腥藻,获得无藻满江红和鱼腥藻.采用水培试验的方法分别研究了无藻满江红、有藻满江红和鱼腥藻对水中铀的去除行为,并采用红外光谱技术分析了它们富集铀前后化学基团的变化.结果表明,对于初始浓度分别为2.5和5.0 mg·L-1的铀溶液,在有藻满江红的作用下,分别经过27和36 d生物富集后浓度能降低至GB 23727-2009规定的0.05 mg·L-1排放标准以下,而在无藻满江红和鱼腥藻的作用下,铀浓度无法达到排放标准.相对于无藻满江红,鱼腥藻提高了有藻满江红对水中铀的富集量、富集系数及对铀的抗胁迫能力,从而提高了有藻满江红对水中铀的去除效率.红外分析表明,在富集铀后,与无藻满江红相比,有藻满江红体内出现了芳环和醇类或苷类化合物,而这些新的物质是鱼腥藻在富集铀的过程中产生的,其可能促进了有藻满江红对铀的富集.
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| 关 键 词： | 铀 满江红 共生体系 鱼腥藻 |
| 收稿时间： | 2016/3/20 0:00:00 |
| 修稿时间： | 2016/4/21 0:00:00 |
The role of Anabaena in the Azolla-Anabaena symbiotic system for the removal of uranium from water |
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| HU Nan,DING Dexin,ZHAO Weichao,HU Jinsong,TAN Yujian,LI Le,ZHENG Jifang and WANG Yongdong.The role of Anabaena in the Azolla-Anabaena symbiotic system for the removal of uranium from water[J].Acta Scientiae Circumstantiae,2017,37(1):162-168. |
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| Authors: | HU Nan DING Dexin ZHAO Weichao HU Jinsong TAN Yujian LI Le ZHENG Jifang and WANG Yongdong |
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| Institution: | Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001,Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001,Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001,Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001,Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001,Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001,Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001 and Key Discipline Laboratory for National Defense for Biotechnology in Uranium Mining and Hydrometallurgy, University of South China, Hengyang 421001 |
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| Abstract: | Azolla and Anabaena(ANA) were isolated from Azolla-Anabaena symbiotic system(AASS). Culture experiments were conducted for the removal uranium by Azolla, AASS and ANA, respectively, and the changes of chemical groups in Azolla, AASS and ANA before and after accumulation of uranium were analyzed by using infrared spectrometer. The results show that, after 27 and 36 d of accumulation by AASS, the uranium concentrations of the culture with initial concentrations of 2.5 and 5.0 mg·L-1 were reduced to below 0.05 mg·L-1, which was the discharge limit by China (GB 23727-2009). Neither Azolla nor ANA could reduce the uranium concentrations to the prescribed limit. ANA was found to increase the bioaccumulation amount and factor of uranium and the resistance capability to the uranium stress of AASS. The aromatic ring compounds and alcohols or glycosides were found in AASS after accumulation of uranium compared with Azolla. These new substances were produced by ANA when accumulating uranium, and they probably promoted the accumulation of uranium by AASS. |
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| Keywords: | uranium Azolla symbiotic system Anabaena |
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